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Pasting an object onto a background
#1
Hi,

First time user here and pretty new to Gimp.

I have a bit of a perplexing problem.
I have created an object with a transparent background, which I want to paste against other backgrounds.

When I paste him as a new layer over a solid color, such as magenta, he looks fine.

But when I paste him over a complex background, such as a park, he looks semi-transparent! In other words, the background is showing through the pasted object.
The opacity of the pasted layer is at 100%.

I had made a similar cutout  of a different pose and pasted him on another background without this problem.

Can anybody tell me what I'm doing wrong?


Please help! I need to get this done today!
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#2
Could it have something to do with the scaling? The object is much larger than the background and I had to scale the layer to about 30% to make it fit. I've since merged everything and printed it out and it doesn't look too bad, so maybe there's not an issue after all.
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#3
Hard to tell without screenshots (with a visible layers list). Possibly a problem with the layer blend mode.
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#4
(07-09-2021, 11:41 PM)Ofnuts Wrote: Hard to tell without screenshots (with a visible layers list). Possibly a problem with the layer blend mode.
Yep, indeed!
@rosm2004 > The way the background of that object was removed is also important, for example color to alpha shows this behavior.
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#5
Thank you @ofnuts and @PixLab for your replies. I will post pics when I get a chance - had to get it finished and problem isn't that noticeable for my purposes at this point but would like to find out what I'm doing wrong for the future.
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#6
I redid the cutout (using various methods to remove the background) and repasted it as a layer onto the park background and scaled it down. This time it overlayed fine, with no transparency. I have no idea what I did differently. I had the blend mode set to normal in both instances. I hadn't preserved the layers in the image with the original problem so am not able to do a screen shot showing the bleed-through. @ofnuts I might have hit "color to alpha" by mistake. I don't know what it does.

Thanks again for your responses. I have it working now, so is no longer an issue. Just hope I can avoid making the same mistake in the future. A lot of it has to do with me being a novice to Gimp (had worked a bit with Photoshop previously but not very experienced) and bumbling around watching YouTube videos trying to figure out how to get things done.
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